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      Geo-correction Algorithm Based on Equivalent RD Model for ScanSAR of HJ-1-C Satellite

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          Abstract

          HJ-1-C satellite is the first Synthetic Aperture Radar (SAR) satellite for civilian use in China, and it has a strip and scan mode. According to the characteristics of the ScanSAR of the HJ-1-C satellite, a geo-correction algorithm based on an equivalent RD model has been outlined in this paper on the basis of an ECS image processing algorithm and a traditional Range-Doppler location method. An azimuth mosaic was presented by a time series relationship, then the different burst was stitched by range, and the equivalent parameters were fitted to locations on the RD model. Finally, the ScanSAR image was geo-corrected. The HJ-1-C satellite data results showed that the location accuracy of ScanSAR for the HJ-1-C satellite was less than 100 m, and the geo-correction algorithm was realized in 10 s in fewer than 24 parallel cores.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 June 2014
          : 3
          : 3
          : 361-367
          Affiliations
          [1 ] ①(Key Laboratory of Technology on Geo-spatial Information Processing and Application System, Chinese Academy of Sciences, Beijing 100190, China)③(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ④(University of Chinese Academy of Sciences, Beijing 100049, China)
          [2 ] ①(Key Laboratory of Technology on Geo-spatial Information Processing and Application System, Chinese Academy of Sciences, Beijing 100190, China)③(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
          [3 ] ②(National Key Laboratory of Microwave Imaging Technology, Beijing 100190, China) ③(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
          Article
          627b72cc8b7a443ab5394b4ab1f17aeb
          10.3724/SP.J.1300.2013.13050

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

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